Question

He may be admitted after he has a membership card. (reason)
Choose the option that best corrects the underlined word with the help of the hint in the bracket.

• A. NO CHANGE
• B. as
• C. therefore
• D. but

Answer 1

The correct option is B as

When two clauses are combined together, such that one of them is dependent on the other for its full meaning, then that clause is the subordinate cause (He has a membership card) dependent on the main clause (He may be admitted), and the conjunction used for such a sentence is a subordinating conjunction. The given subordinate clause is the reason or cause that allows 'him' to be admitted. It is because he has a membership card that he's allowed to be admitted. 'After' is used when the clause is time-related, since the clause here is a reason and does not refer to time, the sentence needs to be changed, hence option A is incorrect. 'As' is a conjunction that combines a cause and its result, hence it replaces 'after', and option B is correct. 'Therefore' is a coordinating conjunction used for independent sentences combined together; more specifically, it's an Illative conjunction, which we use for a sentence that is inferred from another, whereas the given subordinate clause is not independent for its full meaning, nor does it infer from the main clause, hence option C is incorrect. Similarly, 'but' is a coordinating conjunction, more specifically an adversative conjunction used when the sentences are contrast in meaning. As 'but' does not comply to the given sentence, option D is incorrect.